What happens when the soviet ships first reach the quarantine line and how do the presidents advisers react?

As the Soviet Ships reached quarantine line, US sent one of its carrier and destroyer ships to intercept the intruder ship.

President’s military advisers put out the highest military alert “DEFCON 2” in the possibility of an armed attack on US mainland  and started preparing for a full-fledged war.

Explanation

The Cuban Missile Crisis brought the world on the brink of another dastardly lethal war. As the US officials discovered of soviets building missile sites in Cuba, president along with his advisers became tensed about the possibility of an armed ballistic attack in future.

Hence, the US president decided to “quarantine” Cuba to deny any possibility of Soviets ship reaching them with fissile material. Though all the ships altered from the course, one of the tanker “Bucharest” approached the quarantine. This act completely tensed the situation and US military went on high alert.

More than 40 non-aligned nation (NAM countries) along with UN Secretary-General urged both of the government to refrain from indulging in any situation that may further escalate the situation. Later when US aircraft carrier and a destroyer tried to intercept the tanker, the intruder ship failed to cooperate with the authorities.  

Later as the events unfolded, deep negotiations started between the US and soviets. The US desisted from armed attack when one of its spy-plane was shot down over Cuba. Both the governments committed to diffuse the further flaring up the situation by Soviets announcing for dismantling the soviet weapons from Cuba and the US removing missile sites from Turkey although at a later date so as not to alienate Turkey(it’s allied).

b, the anti immigrant fervor

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